How fast do different parts of the EM spectrum travel in a vacuum?

2 Answers
Nov 20, 2016

Answer:

At the speed of light.

Explanation:

Remember that the EM spectrum are comprised of energy waves. Light is an energy and is part of the EM spectrum.

Speed of light in a vacuum is #299 792 458 m/s#. Most people round to #3.0xx10^8#. However the speed alters when travelling in through a medium, like water or air.

Hope this helps :)

Sep 28, 2017

All parts of the EM spectrum travel at #3*10^8 m/s#.